Gas-burner.



C@ W. DE PGREST.

GAS BURNER. APPLIGATION FILED APB. 4, 1910.

991,141. Patenteamayawu.

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Wzegsae Inn/@luier 'IINITEB i STATES IIEN FFICE.

CORNELIUS W. DE FOREST, OF COVINGTON, KENTUCKY, ASSIGNOB OF ONE-HALF TOTHE CREAGI-IEAD ENGINEERING COMPANY, OF CINCINNATI, OHIO, A CORPORATIONGAS-BURNER.

Specification of Letters Patent.

Application filed April 4, 1910.

Patented May 2, 191i.

Serial No. 553,328.

To all whom it may concern:

Be it kno-wn that I, CORNELIUS W. DE FOREST, a citizen of the UnitedStates, and a resident of the city of Covington, in the county of Kentonand State of Kentucky, have invented cert-ain new and usefulImprovements in Gas-Burners, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming a part of this specication.

My invention relates to gas burners of the kind designed for the burningof gas as a fuel for boilers and the like, and the object of myinvention is to provide a simple and effective burner convenient forinstallation, and in which the gas shall be thoroughly mixed with air,and the supply of air and gas readily and perfectly regulated andcontrolled, and it consists of that novel construction and arrangementto be hereinafter particularly pointed out and claimed.

In the drawings, Figure 1 is a perspective view of my improved burner.Fig. 2 is a central longitudinal section of the same.

1 is the outer casing or body of the burner, slightly tapering towardthe ignition end of the burner, and open at each end. Introducedcent-rally into this casing is the gas supply tube 2, closed at itsforward end 3 and provided with a series of apertures t, 1, arrangedspirally around the tube, and inclined forwardly so as to deliver thegas introduced within the tube in a series of spirally disposed andforwardly projecting jets. The gas supply tube extends outwardly throughthe rear of the casing 1, and is joined to the tee 5 by the elbow 6, and7 is the gas cock in the gas delivery pipe 8 which is coupled to the tee5 by the union 9, all of these parts being preferably of standard sizes.

The upper surface of the inner end of the casing l is provided with aboss 10, threaded to receive a straight piece of tubing 11, which isscrew threaded into the tee 5. In this way the casing is supported andthe gas supply tube and casing maintained in fixed relation to eachother.

Pivotally secured by the pin 12 to the inner face of the burner casingare the shutters 13, 18, recessed at 14 to embrace the gas supply pipe,and by adjusting these shutters the supply of air is regulated andcontrolled.

15 is a sleeve slidingly mounted on the gas supply tube 2, and bysliding this sleeve in either direction the openings t are cut off oropened up to perfectly regulate the amount of gas delivered by thesupply pipe.

The simplicity of the construction above described and its cheapness tomanufacture are apparent.

The air enters the casing around the gas supply pipe and the ets of gasare projected spirally against the surface of the casing and in thedirect-ion of and across the -entering current of air. Thus a veryperfect mixture of gas and air is obtained and delivered for ignition atthe tapered end of the burner, the forward projection of the gasassisting also in the maintenance of the draft. Inasmuch as during theuse of the burner, a strong current of cold air is entering on all sidesof the gas supply tube, the burner at the inlet end remains cool, sothat the adjusting sleeve for the gas supply can be adjusted along thesupply pipe to perfectly regulate the number of gas inlets and thus thesupply of gas.

l/Vhat I claim as new, and of my invention and desire to secure byLetters Patent, is:-

In a gas burner, a burner casing open at both ends, and a gas supplytube secured centrally in said casing and extending lengthwise thereofand forming an annular mixing chamber, said supply tube being closed atits inner end and provided with a series of circumferentially andspirally disposed apertures to project the gas across the incomingcurrent of air to obtain a thorough mixture of gas and air.

CORNELIUS WV. DE FOREST.

Attest:

MARsToN ALLEN, FRANK W. KUNKEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

